のは危険です

it is dangerous to

→ の
phrase Rare #25,877
it is dangerous to Follows a verb in its plain form and means that doing something is dangerous. の nominalizes the preceding action, and は marks it as the topic.
JA: 夜に一人で歩くのは危険です。
EN: It is dangerous to walk alone at night.

生きるのは危険です

Living is dangerous.

地元人と付き合うのは危険です

Dating a local is dangerous.

— RRR (2022)

子供がこのの近くで遊ぶのは危険です

It is dangerous for children to play near this pond.

で遊ぶのは危険です

Playing in the street is dangerous.

撃つのは危険です

Shooting is dangerous.

— エリート・スクワッド (2007)

の上でスケートをするのは危険です

Skating on the pond is dangerous.

ここで通りを渡るのは危険です

It’s dangerous to cross the street here.

あの山に登るのは危険です

Climbing that mountain is dangerous.